JPH0211576Y2 - - Google Patents

Description

[Detailed Description of the Invention] (1) Technical Field of the Invention The present invention provides a plurality of links between a cup-shaped mounting member fixed to the door of furniture, etc., and a frame-shaped mounting member fixed to the side plate of the door. The present invention relates to a hinge formed by rotatably connecting two mounting members, and more particularly to a catch formed by applying a coiled spring to both mounting members in the closed position.

(2) Prior art and its problems Conventionally, as a catch for this type of hinge, a cam whose tip protrudes in a direction perpendicular to the link is provided on an outer link that is pivoted to a frame-type mounting member. A mechanism is provided in which one end of a spring cooperates between the two ends and the other end is locked to a frame-type mounting member. For example, as shown in Japanese Patent Application Laid-Open No. 57-180781, a swinging member with one end pivoted is interposed between one end of a coiled spring and a cam, and the cam is slid along the guide surface of the swinging member. There are mechanical ones.

According to this, since sliding contact due to sliding between the cam and the guide surface is unavoidable, the opening/closing process lacks smoothness. As a result, wear occurs between the guide surface and the cam, which in turn causes an error in the catching force. Furthermore, the amount of momentum of the swinging member cannot be set to a large value due to the space of the frame-type mounting member, so that the spring force cannot be sufficiently applied.

On the other hand, although it is not a coiled spring,
As shown in Japanese Patent No. 77773, there is a mechanism in which a roller is provided around the free end of a cantilevered leaf spring, and a cam is slid directly onto the roller. According to this, the catching force tends to be inconsistent depending on the length of the sliding distance between the cantilever support point of the leaf spring and the roller. This is because individual errors in manufacturing each component cannot be absorbed between the cam and the roller.
Further, although a leaf spring exerts a spring force in proportion to the cantilever distance, it is unavoidable to have specific problems such as not being able to obtain sufficient catching force due to space constraints.

(3) Purpose of the invention The present invention was provided in order to eliminate the above-mentioned drawbacks, and its purpose is to obtain a smooth catching operation during the opening/closing process and to be able to exert a strong catching force. It is.

(4) Features of the invention The feature of the hinge catch according to the invention is that collars are rotatably provided at both ends of the shaft pin of the frame-type mounting member to which the inner link plate is pivoted. Both leg plates of the roller are provided with guide parts for the roller, and both ends of a roller shaft that rotatably supports the roller are loosely fitted into the guide part of the roller near both ends, and the roller shaft is connected to the spring. The roller is rotatably interposed between the collar and the cam while being pressed at one end. The following will explain based on the drawings.

(5) An embodiment of the invention The drawings show an embodiment of the hinge catch according to the invention, in which Fig. 1 is a longitudinal sectional view of the hinge in the closed position, Fig. 2 is an exploded perspective view of the area around the catch, and Fig. 2 is a longitudinal sectional view of the hinge in the closed position. FIG. 3 is an exploded perspective view showing the relationship between the rollers, guide grooves, and collars of the catch, FIG. 4 is a longitudinal cross-sectional view of the catch in a position immediately before closing, and FIG. 5 is a longitudinal cross-sectional view of the catch in an open position.

The hinge consists of a cup-shaped mounting member 1 that is fixed to a door A of furniture, etc., a frame-shaped mounting member 2 that is fixed to a side plate B of furniture, etc., and these 1 and 2 are connected to a shaft pin 3,
It consists of a plurality of link plates 7 and 8 rotatably connected at points 4, 5, and 6. Cup type mounting member 1
has a cup-shaped hollow part and a flange extending from the outer edge of the cup-shaped hollow part, and the flange is fixed to the door A with a mounting screw (not shown). The frame type mounting member 2 is
A washer 9 is fixed to the side plate B via a mounting screw 10, and is attached to the washer 9 by inserting a fixing screw 13 and an adjusting screw 14 through the long groove 11 and clock hole 12 of the frame type mounting member 2. . Further, cam members 15 whose tips protrude in a direction perpendicular to the link plate 7 are integrally bent on both widthwise end surfaces of the outer link plate 7 which is pivotally attached to the shaft pin 4 of the frame type mounting member 2. The cam member 15 and one end 16a of the coiled spring 16 cooperate with each other, and the other end 16b of the coiled spring 16 is locked by the locking shaft 18 of both leg plates 17, 17 of the frame type mounting member 2. There is. The center of the coiled spring 16 is positioned by a fixed shaft 19 inserted therethrough.

The catch includes a cam member 15, a guide groove 20 as a guide part provided on the frame-type mounting member 2,
A roller 21 is loosely fitted into the guide groove 20, and the roller 21 is rotatably provided on the shaft pin 6 of the frame-type mounting member 2 to which the inner link plate 8 is pivotally attached.
1 and an abutting collar 22. To explain in detail, the cam member 15 has rollers 21 on its tip surface.
The cam 23 includes a guide surface 23a projecting in a substantially arc shape and a drop-in surface 23b recessed from the guide surface 23a. On the other hand, the guide groove 20 is recessed in a direction that separates the leg plates 17, 17 of the frame-type mounting member 2 at a position where individual errors in the cam 23 and collar 22 can be tolerated. The guide groove 20 is formed to be long and substantially straight in the load direction of the coiled spring 16, and is formed in the guide end surface 2.
0a, and the groove width W between the guide end surfaces 20a, 20a
is formed to be larger than the diameter L of the roller shaft 24 described below. Further, the cam 23 is configured with a regulating end surface 20b having a groove width W.

The rollers 21 are rotatably supported near both ends of the roller shaft 24. Both ends 25, 25 of the roller shaft 24 are loosely fitted into the guide groove 20, and one end 16a of the coiled spring 16 is supported by a notch 26 provided in the middle thereof. Here, since the coiled spring 16 is composed of a plurality of helical springs, one end 16a, 16 of each of the notches 26 is provided.
a is supported, and the other end 16b, 16b is a locking shaft 18
They are each locked in place. Further, the collar 22 has a ring shape, is supported by the shaft pin 6 at both ends in the width direction of the winding end of the link plate 8, and has an outer diameter smaller than the winding end outer diameter to prevent collision of the stepped structure. The department is made up of: Therefore, the roller 21 is connected to the cam 23 and the collar 22.
It is rotatably interposed between the coil spring 16 and the coil spring 16 via a rotatable roller shaft 24.

Next, the operation based on the above structure will be explained. As shown in FIG.
is receiving the spring force from one end 16a of the coiled spring 16, so the spring force acts in the opening direction of the door A via the roller 21 and the outside of the guide surface 23a. The roller shaft 24 is located approximately in the middle of the guide groove 20 in the length direction.

As shown in FIG. 4, when the door A moves to the closed position, the roller 21 moves as the cam 23 moves.
The cam 2 rolls into contact with the collar 22 at the same time.
It rolls into contact with the drop-in surface 23b from the outside of the guide surface 23a of No. 3. In this case, Colo 21
While rolling around and in contact with the collar 22, it selects a moving position while being regulated by the guide end surface 20a and being pressed by the coiled spring 16 within the range of the groove width W and its length. That is, since the moving position is appropriate for the spring load, the transition to the closed position is performed smoothly. At the position just before closing,
Guide surface 2 where roller 21 is close to falling surface 23b
3a, the spring force is acting in the closing direction.

In the closed position, as shown in FIG. 1, since the cam 23 is located at the drop-in start surface of the drop-in surface 23b, the spring force acts in the closing direction. The roller 21 has a slight gap X at the regulating end surface 20b.
and is located between the collar 22 and the drop-in starting surface.

According to the above embodiment, the following effects are achieved.

Both ends 25, 25 of the roller shaft of the roller 21 are in the guide groove 2.
0 is fitted loosely, so the roller 21 selects and moves to the most appropriate position for the spring load. Therefore, the pressing force of the one end 16a of the coiled spring 16 is always applied from the direction perpendicular to the one end 16a, and the spring force can be maximized without loss.

In addition to the above reasons, since the cam 23 is located at the drop-in start surface of the drop-in surface 23b and is also located slightly in front of the regulating end surface 20b of the guide groove 20 with a gap X in between, the closed position A strong catching force can be applied at

In the closed position, the roller 21 is sandwiched between the collar 22 and the drop-in start surface of the drop-in surface 23b, but it can be prevented from going too far by the regulating end surface 20b. As a result, the roller 21 is caught between the link plates 7 and 8, and the link plates 7 and
This can solve the problem of 8 not rotating.

Since the roller 21 and the roller shaft 24 are rotatably supported, and one end 16a of the coil spring 16 is supported in the notch 26, the coil spring 1
There is no friction between the rollers 6 and the rollers 21, and no mechanical noise is generated due to friction.

Since the roller 21 is positioned in the width direction by the step structure between the winding end surface of the link plate 8 and the collar 22, the roller 21 can be manufactured by simply inserting it into the roller shaft 24, and the roller 21 can be manufactured by simply inserting it into the guide groove 20. It has the advantage of being easy to install.

(6) Another Embodiment of the Invention FIG. 6 is a perspective view of essential parts showing another embodiment of the guide portion in the catch. Since the same reference numerals in the figures indicate equivalent parts, repeated explanation will be omitted.

Therefore, the frame type mounting member 2 is used as a guide part.
A guide hole 30 is bored in the leg plate 17 as a guide portion. The guide hole 30 has a guide end surface 30a and a regulating end surface 30b, and both ends 25, 25 of the roller shaft 24 are loosely fitted into the guide hole 30, respectively. Both ends 25, 25 do not protrude from the outer surface of the leg plates 17, 17.

According to this embodiment, the same effect as the guide groove 20 can be obtained by the guide hole 30, and there is an advantage that the leg plate 17 can be formed into a frame shape without a guide portion protruding from the outer surface. In addition to this, guide hole 3
0 can be press-formed at the same time as the long groove 11 and the watch hole 12, so no special manufacturing process is required, and costs can be reduced accordingly.

(7) Another embodiment of the invention Although the guide groove 20 and the guide hole 30 have been described as the guide portion, other guide portion structures may also be used such as the roller shaft 24 of the roller 21.
It is possible to guide you. For example, protrusions or raised pieces may be provided inwardly of the leg plate 17 to function as the guide end surfaces 20a, 30a and the regulating end surfaces 20b, 30b.

Further, although the outer diameter of the collar 22 is smaller than the outer diameter of the winding end of the link plate 8, the present invention is not limited to this explanation. When the outer diameter of the collar 22 is made substantially the same as that of the winding end, the same effect as in the embodiment described above can be achieved by providing a stopper for displacing the roller 21 on the opposite side of the roller shaft 24.

Moreover, although the structure in which the roller 21 loosely fits the guide portions 20 and 30 has been described, a structure in which the guide portions 20 and 30 fit together may be used depending on the positional relationship of each component. For example, a similar effect can be achieved by forming the guide portion in an arc shape relative to the collar 22.

Furthermore, the roller 21 and the roller shaft 24 can also be formed into an integral structure.

Furthermore, although a case has been described in which the collar 22 and the rollers 21 are in rolling contact, the collar 22 or the rollers 21 may be implemented in a bearing structure to improve the contact effect.

(8) Effects of the invention As explained above, the invention provides the following effects.

Since the rollers are rolled around the collar, the components of the catch can be brought into rolling contact, and the spring force associated with the opening/closing operation can be exerted without loss, resulting in a strong catching force even in the closed position. There is a characteristic that can be obtained.

In addition to the above reasons, since the rollers are interposed between the collar, the cam, and one end of the coiled spring, the momentum of the rollers can be set freely and a direct catching force can be obtained.

The roller is interposed between the collar, the cam, and one end of the coiled spring, and the frame-type mounting member is provided with a guide section for the roller, so the position of the guide section can be arbitrarily selected and each component It has the advantage of absorbing individual errors during manufacturing.

For the above reasons, the mounting space for each component can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of the hinge catch according to the present invention, in which Fig. 1 is a longitudinal sectional view of the hinge in the closed position, Fig. 2 is an exploded perspective view of the catch, and Fig. 3 shows the roller and guide of the catch. FIG. 4 is a longitudinal sectional view of the catch in the position just before closing, FIG. 5 is a longitudinal sectional view of the catch in the open position, and FIG. 6 is an exploded perspective view showing the relationship between the groove and the collar. FIG. 2 is a perspective view of essential parts showing one embodiment. 1... Cup type mounting member, 2... Frame type mounting member, 3, 4, 5, 6... Axis pin, 7... Outer link plate, 8... Inner link plate, 15... Cam member, 16...Wrapped spring, 16
a... One end of the coiled spring, 17... Leg plate, 20,3
0... Guide portion, 20a, 30a... Guide end surface, 2
0b, 30b...Regulation end face, 21...Roll, 22
... Collar, 23 ... Cam, 23a ... Guide surface of cam, 23b ... Dropping surface of cam, 24 ... Roller shaft, 25 ... Both ends of roller shaft, 26 ... Notch.

Claims (1)

[Claims for Utility Model Registration] (1) A cup-type mounting member and a frame-type mounting member, which are fixed to the door and the side plate, respectively, are rotatably connected at both ends of a plurality of link plates, and the frame-type mounting member has an axis. The attached outer link plate is provided with a pair of cams whose tips protrude in a direction perpendicular to the link plate, one end of the spring cooperates with the cam, and the other end is locked to the frame type mounting member. In the hinge catch, the frame-type mounting member to which the inner link plate is pivoted has collars rotatably provided at both ends of the shaft pin, and roller guide portions are provided on both leg plates of the frame-type mounting member. are respectively provided, and both ends of a roller shaft that rotatably supports the roller are loosely fitted near both ends of the guide portion of the roller, and when the roller shaft is pressed by one end of the spring, the roller is rotated. are rotatably interposed between the collar and the cam, respectively. (2) A hinge catch according to claim 1 of the utility model registration, characterized in that the guide portion is a guide groove formed by recessing the side plate of the frame-type mounting member. (3) A hinge catch according to claim 1 of the utility model registration, characterized in that the guide portion is a guide hole formed in a side plate of a frame-type mounting member.